Chair



FIG. 1 is a front-left side perspective view of a chair showing our new design;

FIG. 2 is front perspective view thereof;

FIG. 3 is a left perspective view thereof; and,

FIG. 4 is a top view thereof.

The unshown rear sides and underside of the chair form no part of the claimed design. 

The ornamental design for a chair, as shown and described. 